Underwater exhaust device
By combining the main muffler and bypass muffler with a wet exhaust connector and wave deflector, the noise reduction and exhaust back pressure issues of the underwater exhaust system are solved, achieving low noise, low emissions and efficient exhaust, thus improving the performance and environmental friendliness of the vessel.
Patent Information
- Application Number
- CN202422311739.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-09-20
AI Technical Summary
Existing underwater exhaust devices have limited noise reduction effects and generate exhaust back pressure, which affects the power output of the main unit.
It adopts a combination structure of main muffler and bypass muffler, combined with wet exhaust connector, wave deflector and exhaust branch pipe, and reduces noise and back pressure through liquid noise reduction and angle adjustment, and exhaust gas is discharged into seawater.
Significantly reduces noise, exhaust emissions, eliminates exhaust back pressure, increases main engine power, improves environmental friendliness and comfort, and is suitable for law enforcement missions of special vessels.
Smart Images
Figure CN223754157U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to marine engine exhaust technology field, concretely relates to a device of underwater exhaust. BACKGROUND
[0002] At present, the exhaust method of marine engine is generally divided into two kinds of water exhaust and underwater exhaust, usually, the exhaust port of water exhaust is directly arranged in air, therefore has the shortcomings of big noise, more exhaust gas, but the water exhaust does not exist back pressure, exhaust is relatively smooth, therefore the influence to the exertion of main engine power is smaller even no influence. The exhaust port of underwater exhaust is arranged below waterline, therefore the noise is relatively small, and exhaust gas is discharged to water, and air pollution is smaller. But during the exhaust of engine, the exhaust port has certain back pressure, and the exhaust gas has certain resistance, and then the exertion of main engine power has certain influence.
[0003] At present, the common underwater exhaust device is simple, for example, the main engine exhaust pipe is connected to the muffler and then discharged outside the ship body plank, the noise reduction effect of the device is limited, and the exhaust pipe and the muffler still have certain exhaust back pressure, and the exertion of main engine power is still influenced.
[0004] In summary, it is necessary to invent a device of underwater exhaust. UTILITY MODEL CONTENTS
[0005] Therefore, the utility model provides a device of underwater exhaust to solve the problems of limited noise reduction effect of the device, certain exhaust back pressure of the exhaust pipe and the muffler, and certain influence to the exertion of main engine power.
[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a device of underwater exhaust, including main engine, the main engine is installed in the engine room of ship body, one end of the main engine is communicated with exhaust component, the exhaust component is installed at the bottom of the outer wall of ship stern.
[0007] Preferably, the exhaust component includes main engine muffler, the main engine muffler is installed at the bottom of one side of the outer wall of ship stern, the top end air inlet of the main engine muffler is communicated with wet exhaust joint, one end of the wet exhaust joint away from the main engine muffler is communicated with exhaust pipe.
[0008] Preferably, one end of the exhaust pipe away from the wet exhaust joint is communicated with the main engine exhaust port of main engine, the inner wall bottom end of the main engine muffler is provided with exhaust port, and the exhaust port extends below the sea water line.
[0009] Preferably, the outer wall bottom end of the main engine muffler and located the front side of exhaust port are provided with the wave plate for adjusting exhaust pressure, the included angle between the main engine muffler and ship bottom plate is 80 degrees, and the included angle between the wave plate and ship bottom is not more than 10 degrees.
[0010] Preferably, the exhaust component further comprises a main engine bypass muffler, which is arranged on the outer wall of the ship stern and above one side of the main engine muffler, and an exhaust branch pipe is communicated with the air inlet end of the main engine bypass muffler, and the exhaust branch pipe is communicated with the upper side of the inner wall end of the main engine muffler.
[0011] Preferably, the exhaust end of the main engine bypass muffler is communicated with an exhaust discharge pipe through an exhaust branch pipe, the exhaust discharge pipe is arranged above the sea water line, and a discharge baffle is arranged above the inner wall of the end of the exhaust discharge pipe away from the main engine bypass muffler.
[0012] Preferably, the inner wall of the main engine muffler is fixed with a plurality of prismatic buffer plates, and the plurality of prismatic buffer plates are arranged on both sides of the inner wall of the main engine muffler in a staggered manner.
[0013] The beneficial effects of the present application are as follows:
[0014] Compared with the traditional muffler, the device can greatly reduce the noise of the ship, has less exhaust emission, will not produce exhaust back pressure, makes the power of the main engine better, and makes the environmental protection and comfort of the ship better, and is more convenient for law enforcement for the special ship with small noise (such as law enforcement ship against smuggling), and has better effect of cracking down on smuggling crime. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a partial structure schematic view of the exhaust component in the present application in the downward direction;
[0016] Figure 2 is a partial structure schematic view of the ship stern in the present application in the rear direction;
[0017] Figure 3 is a structure schematic view of the exhaust component in the present application in the side direction;
[0018] Figure 4 is a structure schematic view of the installation of the main engine muffler and the wave suppression plate in the present application;
[0019] Figure 5 is a structure schematic view of the wave suppression plate in the present application in the downward direction;
[0020] Figure 6 is a sectional structure schematic view of the main engine muffler in the present application.
[0021] In the figure: 100, main engine; 200, main engine silencer; 201, prismatic buffer plate; 210, wet exhaust joint; 220, exhaust pipe; 230, main engine exhaust port; 240, pressure wave plate; 300, main engine bypass silencer; 310, exhaust side pipe; 320, side water baffle; 330, exhaust branch pipe. DETAILED DESCRIPTION
[0022] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model.
[0023] Refer to the drawings Figures 1-6 The utility model provides a kind of underwater exhaust device, including main engine 100, main engine 100 is installed in the engine room of ship body, one end of main engine 100 is communicated with exhaust component, exhaust component is installed at the bottom of the outer wall of ship stern, exhaust component includes main engine silencer 200, main engine silencer 200 is installed at the bottom of the outer wall of ship stern, the main engine silencer 200 that is set is to carry out silencing to the tail gas of main engine 100, the top end air inlet of main engine silencer 200 is communicated with wet exhaust joint 210, the wet exhaust joint 210 that is set is used to reduce the noise of tail gas emission and purify exhaust gas, the working principle of wet exhaust joint 210 is to guide exhaust gas stream through water or other liquid, chemical reaction is generated in liquid, and exhaust noise is reduced by the damping effect of liquid, and exhaust gas is purified to a certain extent, while wet exhaust joint 210 is usually composed of a container and pipeline, exhaust gas stream enters container from pipeline and contacts water or liquid to generate noise reduction process, in the process of contacting liquid, some harmful gases are dissolved in water or converted into relatively harmless substances by chemical reaction in water, so as to have less impact on environment, one end of wet exhaust joint 210 away from main engine silencer 200 is communicated with exhaust pipe 220, and the exhaust pipe 220 that is set is to deliver the tail gas of main engine 100 into main engine silencer 200, one end of exhaust pipe 220 away from wet exhaust joint 210 is communicated with the main engine exhaust port 230 of main engine 100, the inner wall bottom end of main engine silencer 200 is provided with exhaust port, exhaust port extends below sea water line, and main engine silencer 200 discharges tail gas into sea water line, so noise is relatively small, and exhaust gas is discharged into water, so air pollution is relatively small, the outer wall bottom end of main engine silencer 200 and located in the front side of exhaust port is provided with pressure wave plate 240 for adjusting exhaust pressure, the included angle between main engine silencer 200 and ship bottom plate is 80 °, the included angle between pressure wave plate 240 and ship bottom is not more than 10 °, the pressure wave plate 240 that is set can be movably installed at the bottom end of main engine silencer 200 by bolt, the pressure wave plate 240 that is set can adjust exhaust angle according to the size of exhaust pressure, reduce back pressure caused by sea water in exhaust port area, so that exhaust is more smooth.
[0024] The exhaust component further comprises a main engine bypass muffler 300 arranged on the outer wall of the ship stern and above one side of the main engine muffler 200. The main engine bypass muffler 300 can make the exhaust gas in the top of the main engine muffler 200 discharge more smoothly, and reduce the back pressure caused by the upper end of the main engine muffler 200. The air inlet end of the main engine bypass muffler 300 is communicated with an exhaust branch pipe 330, and the material of the exhaust branch pipe 330 is preferably rubber. The end of the exhaust branch pipe 330 away from the main engine bypass muffler 300 is communicated with the upper end of the inner wall side end of the main engine muffler 200. The exhaust branch pipe 330 is arranged to transport part of the exhaust gas on the upper end of the main engine muffler 200 into the main engine bypass muffler 300. The exhaust end of the main engine bypass muffler 300 is communicated with an exhaust discharge pipe 310 through the exhaust branch pipe 330. The exhaust discharge pipe 310 is arranged above the water line. The main engine bypass muffler 300 can transport the exhaust gas into the exhaust discharge pipe 310, so that the exhaust discharge pipe 310 can discharge the exhaust gas in the main engine bypass muffler 300. The end of the exhaust discharge pipe 310 away from the main engine bypass muffler 300 is installed with a discharge side water baffle 320 above the inner wall. The discharge side water baffle 320 is arranged to prevent external seawater or water flow from entering the exhaust pipe, and to protect the safety and normal operation of the exhaust system. The inner wall of the main engine muffler 200 is fixed with a plurality of prismatic buffer plates 201. The prismatic buffer plates 201 are arranged on both sides of the inner wall of the main engine muffler 200 in a staggered manner. The prismatic buffer plates 201 are arranged to buffer the exhaust gas in the main engine muffler 200, so as to make the muffling effect better. The main engine bypass muffler 300 is mainly used for auxiliary effect, so its size is small. The exhaust discharge pipe 310 can be arranged above or below the water line.
[0025] The use process of the utility model is as follows: firstly, the host computer 100 will first convey the tail gas into the wet exhaust joint 210 through the exhaust pipe 220 communicated with the host computer exhaust port 230, and the wet exhaust joint 210 will first filter the tail gas, the filtered tail gas will enter into the host computer muffler 200 through the wet exhaust joint 210, then the tail gas will be discharged into seawater through the exhaust port, and the tail gas can be buffered by the prismatic buffer plate 201 when passing through the host computer muffler 200, so that the sound attenuation effect is more optimal, and the adjustable wave suppression plate 240 is arranged in front of the exhaust port of the ship bottom, the wave suppression plate 240 can adjust the exhaust angle according to the size of the exhaust pressure, reduces the back pressure caused by the seawater in the exhaust port area, makes the exhaust more smooth, at the same time, the host computer bypass muffler 300 connected through the exhaust branch pipe 330 is arranged on the upper end of the special host computer muffler 200, the host computer bypass muffler 300 can make the exhaust gas in the top of the host computer muffler 200 more smoothly, reduces the back pressure caused by the host computer muffler 200, and the host computer bypass muffler 300 can quickly discharge the tail gas in the host computer bypass muffler 300 through the exhaust branch pipe 330 and the exhaust discharge side pipe 310, but the host computer bypass muffler 300 is mainly auxiliary, so its size is small, and the tail gas can be discharged on the seawater line or below the seawater line.
[0026] The above is only the preferred embodiment of the utility model, and any skilled person in the art can modify the utility model by using the above-mentioned technical solutions or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement according to the technical solutions of the utility model is within the scope of protection required by the utility model.
Claims
1. An apparatus for underwater exhaust comprising a main engine (100) installed in a machinery room of a ship, characterized in that: One end of the host (100) is communicated with exhaust components, the exhaust components are installed at the bottom of the outer wall of the stern, the exhaust components include a host silencer (200), the host silencer (200) is installed at the bottom of the outer wall of the stern, the top end of the host silencer (200) is communicated with a wet exhaust joint (210), the wet exhaust joint (210) is communicated with an exhaust pipe (220) away from the host silencer (200), the exhaust pipe (220) is communicated with the host exhaust port (230) of the host (100) away from the wet exhaust joint (210), the inner wall bottom end of the host silencer (200) is provided with an exhaust port, and the exhaust port extends below the sea water line.
2. A device for underwater exhaust according to claim 1, characterized in that: The outer wall bottom end of the host silencer (200) and the front side of the exhaust port are provided with a wave pressure plate (240) for adjusting the exhaust pressure, the included angle between the host silencer (200) and the bottom plate is 80°, and the included angle between the wave pressure plate (240) and the bottom is not greater than 10°.
3. A device for underwater exhaust according to claim 2, characterized in that: The exhaust components further include a host bypass silencer (300), the host bypass silencer (300) is arranged on the outer wall of the stern and above one side of the host silencer (200), the exhaust branch pipe (330) is communicated with the air inlet end of the host bypass silencer (300), and the exhaust branch pipe (330) is communicated with the inner wall side end above the host silencer (200) away from the host bypass silencer (300).
4. A device for underwater exhaust according to claim 3, characterized in that: The exhaust end of the host bypass silencer (300) is communicated with an exhaust discharge pipe (310) through the exhaust branch pipe (330), the exhaust discharge pipe (310) is arranged above the sea water line, and the exhaust discharge pipe (310) is provided with an exhaust discharge water baffle (320) on the inner wall above the exhaust end away from the host bypass silencer (300).
5. The device for underwater exhaust according to claim 1, characterized in that: The inner wall of the host silencer (200) is fixed with a plurality of prismatic buffer plates (201), and the plurality of prismatic buffer plates (201) are uniformly arranged on both sides of the inner wall of the host silencer (200) in an interlaced manner.